Nozzle for liquid-fuel burners



Feb. 14, 192s.

s.` ANGROVE NOZZLE FOR .LIQUID FUEL BURNERS Filed Aurc'. 25, 1926 INVENToR. Yo/Ize/.j/o V6.

,BY ATTORNEYS.

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Patented F eb. 14, 1928.

UNir En STATES coaPoRA'rIoN 0F -RnoDE ISLAND.V Y

PATENT oF l 1,659,538 Fica.;

p MENTs,"'rofBURNoYDHEATING CoaroRA'rIoN, or PROVIDENCE, RHODE ISLAND, A

NozzLE ron LIQUID-FUEL DURNEBS.

Application ined August 25, i326, seriai No. 131,379.

This invention relates to `an apparatus, for burning fuel` such as hydrocarbon o lls; and hasifor its object to provide an oil' dlscharge nozzle which is so constructed that 1t will cause the oil to be better picked up by the air passing over it to. increase the combustion of the oil.

A further object ofthe invention is to corrugate the inner `bottom surface of` thc nozzleso. as to breakup the oil and expose a greater surface thereof to the air passing through the nozzle.

A still further object of the invention is to provide an oil nozzle of such shape relative to the air passage for the draft that the air will pass through the Vnozzle as Well as about the outside thereof to prevent overheating of the nozzle.

. Vvlith these and other objects in view, the

invention consists'of certain novel features of construction, as will be more fully `described, and particularly pointed out in the appended claims.

In the. accompanying drawings: i

Figure 1 is a side elevatlonof the oil burning apparatus showing its location relative to the furnace.

Figure 2 is a sectional elevation of the fire pot and nozzle and the portion of the air dra-ft supply pipe.

Figure 3 is a sectional end line 3--3 of Figure 2.

Figure 4 is a perspective View of the nozzle.

Figure 5 is a longitudinal sectional view through the nozzle. Figure 6 is a perspective view of a modified form of nozzle. p

It is found in the practical operation of liquid fuel burners of the character adapted to heat residences and dwelling houses, of advantage to providean oil distributing nozzle which will not burn out due to overheating and one which will break up and expose the maximum surface of the oilto the draft of air passing throughthe nozzle over the oil; and I have provideda nozzle which is of a shape different from that of the air supply pipe and corrugated on the inner lower surface of the nozzle, whereby air may pass about the nozzle to keep it cool and the air passing through the nozzle Will pass over the oil trickling along the corrugated surface toA better pick up the oil and carry it elevation on burned.

to the firepot to be burned; and the following 1s a detailed description of the present embodiment of the invention showing one construction by which these advantagerius results maybe accomplished f With reference to the drawings, 10 designates thefront- Wallof a` furnace in which .is located a hydrocarbon burner having a rcpot ll'with an air draft supply 12 and motor driven` fan 13. The oil is supplied from any suitable source by gravity through pipe 1li and valve 15 and is discharged into the nozzle 16 which isillustrated as of triangular shape and has a three point bearing support 17, 18 and 19 in the air supply boss 20.

The nozzle 16 is provided at its intake end `with projections 21 on the outer surface which raises this end from the draft boss 2O to cause the nozzle to be inclined slightly with its discharge end 22 lowermost. The nozzle is held in its desired position by means of a positioning pin 23 extending into an opening 24 in the nozzle.

The inner surface of the nozzle 16 is provided with a shallow oilV Well 25 at its oil e receiving end, and is corrugated as at 26 providing a series of inclined surfaces 27 over which the oil must pass in discharging from the nozzle.

The air draft entering through the nozzle in the direction of the arrow 28 picks up the oil and carries it into the lirepot l1 to be It. will be noticed in Figure 3 that the cross sectional area 29 of the nozzle is as great as `tho aggregate cross-sectional areas of the re maining portions 30 about the outside of the nozzle, and the air passing about the nozzle in this Way keeps the same sufficiently cool to prevent the saine from being destroyed by the heat.

In Figure 6 the nozzle 3l is illustrated of rectangular` shape to fit Within rthe circular draft supply that any sulta le shape different from that of the air supp'ly pipe may be provided to permit the air to circulate about the nozzle Walls as well as through lthe same. p

`I have also illustrated in this application a novel form of fire pot which forms the subject ofanother application filed August 25, 1926, Serial No. 131,379.

From the foregoing, it Will be seen that I pipe 21, it being understood have provided a nozzle of a siniple construction which is such that the oil is broken up yto increase the ,surface exposed to the air draft and yet one which is so shaped and positioned in the air draft as to prevent t-he sainey from being overheated and destroyed.

The foregoing description is directed solely towards the construction illustrated, but l desire it to be understood that l reserve the privilege of resortingto all the mechanical changes to which the device is susceptible, the invent-ion being defined and limited only by the terms of the appended claims,

l claim:

l. In an oil burner, an oil supply conduit, a tubular discharge nozzle open at its ends and positioned in the air draft and having a shallow Well for receiving a substantial quantity ot' the oil, and a transversely corrugated surface adjacent its discharge end over which the oil passes from said Well in discharging to increase its surface expose-d to the air draft, the corrugations 0i' said surface extending entirely7 across said nozzle.

2. In an oi'l burner, a cylindrical air supply conduit, and an oil discharge nozzle open at both ends and polygonal in crosssection resting there-in andV contacting at its edges With the interior of the conduit at a plurality ol points transversely thereof, whereby air inay pass through and about said nozzle.

3. In an oil burnerq a cylindrical air supply conduit, and an oil discharge nozzle open at both ends and substantially triangular in cross-section resting therein and Vcontacting with the interior of the conduit at a plurality of its edges, whereby air may pass through and aboutl said nozzle.

In testimony whereof l a'liix niv signature.

SAMUEL ANGROVE. 

